Specs Scheme :3 ways , 3 loudspeaker bass-reflex scheme , and a bookshelf type Using unit For low-pass : 25 cm aperture cone type (LE10H) For mid ranges : 13 cm aperture cone type (LE5-12) For high regions : 2.5 cm aperture dome shape (044) Allowable input : 100 W (IEC specification) Impedance : 8 ohms Cross over frequency : 1100Hz , 3700Hz Output sound pressure level : 89 dB / W / m Level control : Succession good transformation (a mid range, high region) Dimensions : Width 362 x height 597 x depth 298 mm Weight 24 kg (at the time of an original packaging)